Figure 2. Effect of Pseudomonas aeruginosa (PAO1)-conditioned medium on the anti- elastase activity of elafin.
Recombinant elafin was incubated with Tryptic Soy Broth (control) or PAO1-conditioned medium (pre-incubated in absence or in presence of the metalloproteinase inhibitors EDTA and phosphoramidon (Pa)) for 0, 1, 2 and 6h and analysed for its inhibitory activity against neutrophil elastase (NE) by spectrophotometry using the NE substrate MeOSuc-AAPV-pNA.